From csouza@hanse.de Mon May 22 02:48:27 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!hanse!csouza
From: csouza@hanse.de (Camila Souza)
Newsgroups: comp.sys.m68k
Subject: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995May22.024827.1267@hanse.de>
Date: Mon, 22 May 1995 02:48:27 GMT
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The Atari Falcon is the ultimate machine for decoding Project Stardust audio.

The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.
The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus.

Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation.

-- 
Camila Souza
Tape trading list upon request. SASE required for international mail.

From jbrennan@stanford.edu Mon May 22 16:57:27 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!stanford!jbrennan
From: jbrennan@stanford.edu (Jen Brennan)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995May22.165727.2164@stanford.edu>
Date: Mon, 22 May 1995 16:57:27 GMT
References: <1995May22.024827.1267@hanse.de>
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In article <1995May22.024827.1267@hanse.de>, csouza@hanse.de (Camila Souza) writes:
> The Atari Falcon is the ultimate machine for decoding Project Stardust audio.
> The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.

I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'.

Top-posters will be placed in my ~/.killfile without notice.

-- 
Jen Brennan | jbrennan@stanford.edu
PGP Key fingerprint: 17FF 39F8 1D30 056E
"Keep the channels open."

From sokonkwo@mindspring.com Tue May 23 03:22:27 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!mindspring!sokonkwo
From: sokonkwo@mindspring.com (Sven Okonkwo)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995May23.032227.2489@mindspring.com>
Date: Tue, 23 May 1995 03:22:27 GMT
References: <1995May22.024827.1267@hanse.de> <1995May22.165727.2164@stanford.edu>
Organization: MindSpring Enterprises
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In article <1995May22.165727.2164@stanford.edu>, jbrennan@stanford.edu (Jen Brennan) writes:
> I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'.
> Top-posters will be placed in my ~/.killfile without notice.

The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition.

-- 
Sven Okonkwo
Tape trading list upon request. SASE required for international mail.